Cutting and flanging tool



Nov. 10, 1931. J. ZANG 1,830,865

CUTTING AND FLANGING TOOL I Filed oct. 18. 1929 2 Sheets-Sheet 1 efas'e 530/7 MAQ Nov. 10,1931. J. ZANG CUTTING AND FLANGING TOOL 2 Sheets-Shem 2 Filed Oct. 18, 1929 Patented Nov. 10, 1 931 UNITED ATES PATENT orries) ;2

.rosnrn ZANG, or s'r, Louis, MIssoUnr CUTTING AND F AnGrNe "root Application filed October 18, 1929.; Serial No. 400,584.

but that it can-be employed for cutting and flanging apertures in boilers, tanks and any other cylindrical objects.

Referring to said drawings, wherein like numerals refer'to like parts throughoutthe several views, Figure l is a view of the complete tool in elevation; Figure 2 is'a sectional elevation of the tool; Figure 3 an additional view in elevation differing from Figure 1 in that the parts are shown in the position assumed while flanging an aperture; Figure 4 a top plan view of the upper flanging elements; and Figure 5 a top plan view of the lower flanging elements.

The operation of the tool is, preferably,v

effected by connection with an ordinary drillpress and in Figures 1, 2 and 3' the revoluble shaft of the press is indicated by numeral 1. The portion of said shaft adjacent to and connecting with the tool proper is enclosed by a stationary sleeve 2 and its lower extremity is provided with a tapered bore for the recep key 4 which may be inserted through key-way 5. Said key, however, does, not engage said sleeve which,,as before stated, is at all times stationary and serves to support a socket or chuck 6 which is split lengthwise for the purpose of adjustment and secured in place by bolt 7.

The lower portion of said socket is threaded for engagement with the threads of a hub Q carrying a hand-wheel 9, and a two-part collar 10 revolubly seated in an annular recess formed in the lower portion of said hub" is connected by screws 11 with a cone shaped block 12 as shown in Figure 2.

Plate 13 (Figure 4) is secured to block 12 However, it will be obvious that" 'vided' with ribs or keys 24. a The lower extremity of spindle 3 carries a thorough cleansing ofthe interior of the retion of the head of a spindle 3 secured by a I by bothsetsof rollers simultaneously. Havof acap or closure (not shown) screws 14 and comprises a plurality of short extensions 13a serving as axles for the upper set of flangingirollers 15. Pivotally secured to said plate at 16 arerbell-crank levers 17 which, in turn, are pivotally con- --nected at'18 with axles 19 carrying the lower series of fianging rollers20. By reference to Figures 3 and 5 it will be observed that axles 19 are pivotally secured at 21 within'complementary recesses 22 provided in the arms '23 whi h, collectively, form what may be termed the anvil element of the tool, and said anvii, like plate 13, is mounted upon and revolves in unison with spindle 8 which is proremovahle toothed: cutter 25 and a drill 26 for centering the incision in the head of a drum 27 (Figure 1) or similar object which is made by said cutter.

In operation, the drill 26 firstiperforates the head of the drum at its center and the cutter 25 then contacts with the head to form an aperture sufliciently large to permit of the ceptacle. The aperture thus provided affords passage for rollers 20 in theretracted position shown in Figure 2,Iand thereupon they are extended and brought to bear upon the inner surface of the head of the drum adjacent'to the edge of the aperture by manual rotation of wheel 9; Thus disposed, the-arms 23 supporting ;rollers 20 perform, substantially, the function of an anvil. i

Manifestly, the extension of rollers 20 through the agency of levers17 occurs coincident with the lowering of-plat-e 13 carry-V ing rollers 15, and thus it follows thatthe rim-or margin of said aperture is'gripped ing assumed-this position, slight additional pressure is -put upon rollers 15 means vof wheel 9 to depress the edge of said rim as shown inFigure 1 and the flange thus formed affords a seat'for the frictional engagement ceptacle is ready for shipment. v

If and when it is desired to providean up when therei turned flange axles 13a are slightly length-V 'ened and axles 19 correspondingly shortened so as to position rollers 15 against the head of the drum exterior to the plane of rollers 20, the latter then serving to press upward the rim of the aperture formed by cutter 25: this is a mere reversal of the present relation of the parts mentioned.

What I claim as new and desire to secure by Letters-Patent is 1. A tool for cutting and fianging an aperture in the head of a metallic drum or barrel, comprising a cutter and means for rotating the same, a pair of pivoted axles mounted above said cutter and normally occupying an upright position and each of which axles carries a flanging roller on its outer end adapted to engage the interior surface of said head adjacent the edge of the aperture formed by said cutter, a pair of relatively stationary rollers normally spaced from said first-named rollers forengaging the exterior surface of said head, a plurality of means for drawing one set .of rollers toward the other and simultaneously straightening the axles of said first-named rollers after the latter have passed through the aperture made by said cutter, whereby to cause the respective sets of rollers to grip the rim of said aperture, and means for revolving said rollers in unison as they are moved toward each other to cause them to shape and flange the rim of said aperture.

2. A tool for cutting and flanging an aperture in the head of a metallic drum or barrel, comprising a rotatable spindle, a cutter mounted on the loweryend' thereof, rollers mounted on said spindle and adapted to engage the interior surface of said head adjacent the edge of the aperture formed by said cutter, said rollers having each a pivoted axle normally occupying an upright position, additional rollers adapted to engage the exterior surface of said head in proximity to the positionof the first-mentioned rollers, a support on said spindle on which said latter rollers are mounted, levers pivotally connecta ing said support and said axles, means for drawing one set of rollers toward the other after the pivotally-mounted rollers have been inserted through said aperture, whereby to straighten said axles and cause the respective sets of rollers to grip opposite surfaces of said head at different distances from the edge of said aperture, and means for revolving said .rollers in unison, as they are moved in opposite directions in contact with said head, to cause them to shape and flange the rim of said aperture.

JOSEPH ZANG. 

